28947646053 has 64 divisors (see below), whose sum is σ = 47342465280. Its totient is φ = 17405466624.

The previous prime is 28947646051. The next prime is 28947646093. The reversal of 28947646053 is 35064674982.

28947646053 is a `hidden beast` number, since 2 + 89 + 476 + 46 + 0 + 53 = 666.

It is not a de Polignac number, because 28947646053 - 2¹ = 28947646051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28947646051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1032225 + ... + 1059897.

It is an arithmetic number, because the mean of its divisors is an integer number (739726020).

Almost surely, 2^28947646053 is an apocalyptic number.

It is an amenable number.

28947646053 is a deficient number, since it is larger than the sum of its proper divisors (18394819227).

28947646053 is a wasteful number, since it uses less digits than its factorization.

28947646053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27795 (or 27789 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 28947646053 in words is "twenty-eight billion, nine hundred forty-seven million, six hundred forty-six thousand, fifty-three".